Titans running back Chris Johnson missed practice on Tuesday, but coach Mike Munchak says it is not a concern. "He hasn't missed any (OTAs) ... We asked him to be four days a week at least at a minimum, since we started the program, and he has done that," Munchak said. "Like I said last week, a lot of the weeks he has been here five out of five days, so it has been good. This is something that we knew he would need some time off for, so he will be back (Wednesday)."